The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 28, 2005
Filed:
Apr. 08, 2002
Larry Frank Brinkman, Woodstock, IL (US);
Larry Frank Brinkman, Woodstock, IL (US);
Rohm and Haas Company, Philadelphia, PA (US);
Abstract
A moisture reactive hot melt adhesive composition formed by admixing components including a polyisocyanate, an amorphous polyol, tri-C1-C6-alkyl citrate in the amount of 1.3 to 6% by weight based on the weight of said adhesive composition, and styrene/allyl alcohol copolymer having a hydroxyl number of 100-300 and Mn of 1,000-4,000 in the amount of 0.1 to 10% by weight based on the weight of said adhesive composition, wherein the ratio of NCO/OH groups of the components on an equivalents basis is from 1.05 to 2.5, the components being free from crystalline polyesters and polyethers and the components containing less than 1%, by weight based on the total weight of the components, of water is provided. Also a method for forming the adhesive composition and a method for bonding two substrates using the adhesive are provided.